In the entire world, Doei (Doei 
, ดอย 
) is quite a rare boy's first name. The given name Doei is characteristic of Japan, where it is quite a rare male name, Netherlands, where it is a rare gender-neutral name, and Thailand, where it is a rare dominantly male, but seldom feminine name. Measured by absolute frequency, the name is most common in Japan, Thailand, and Indonesia. Very seldom, Doei is the last name as well as the forename.